Mountain Lion’s adoption rate, says Chitika, is on track to outperform OS X Lion, its predecessor. It took Lion three months to reach 14% of total OS X traffic on the company’s network. There is, of course, a chance that Mountain Lion’s growth will plateau over the next two months, but if the current momentum continues, the new OS will pass 14% within the next three weeks. Reviews for Mountain Lion were generally more positive than for Lion and, as Chitika’s analysts point out, the new large number of new features make the new OS feels a bit more like a real upgrade than moving from Snow Leopard to Lion.

As for OS X in general, Snow Leopard (OS X 10.6) continues to dominate with just over 43% of all traffic to Chitika’s network, followed by Lion (31.5%) and Leopard (13%). Among TechCrunch readers, by the way, Mountain Lion already accounts for 30% of all traffic and Lion is still the most popular version of OS X among our readers (41%) and just 25% of you still use Snow Leopard.

OverviewChitika is an online ad network that caters over four billion strategically targeted ads each month to a network of over 250,000+ sites, making it the second largest network of its kind. Chitika ads are known across the industry for their ability to perform unlike any other, leveraging its proprietary targeting and optimization technology - a delicate blend of “Art + Science”- to ensure delivery …